Circulating cooling plastic mold with automatic demolding function

Abstract

The utility model discloses an automatic demoulding circulating cooling plastic mould which comprises a first mould plate and a second mould plate, guide columns are fixedly arranged on the periphery of the first mould plate, guide sleeves are arranged on the periphery of the second mould plate, base plates are fixedly arranged on the first mould plate and the second mould plate, and the guide columns and the guide sleeves are arranged on the first mould plate and the second mould plate. A male die and a female die are respectively fixed on each base plate, a first cooling part and a second cooling part are respectively arranged in the male die and the female die, a material returning part and a cooling material pushing part are respectively arranged on the first die plate and the female die, and compared with the prior art, the cooling effect of the die can be improved, and meanwhile irregular deformation of products is avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, and in particular to an automatic demolding circulating cooling plastic mold. Background Technology

[0002] Injection molding is a method of shaping industrial products. Products are usually made using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. An injection molding machine is the main molding equipment that uses plastic molds to make plastic products of various shapes from thermoplastic or thermosetting materials. Injection molding is achieved through an injection molding machine and a mold.

[0003] Plastic injection molding is a method of producing plastic products. Molten plastic is injected into a mold under pressure, and then cooled and solidified to obtain various desired plastic parts. There are specialized machines for injection molding. Currently, the most commonly used plastics are polyethylene, polypropylene, ABS, PA, and polystyrene. The injection mold is the mold used during injection molding. However, the cooling and demolding devices of ordinary injection molds are not effective enough, which can easily cause irregular deformation of the molded product and affect product quality. Therefore, there is an urgent need in the market to develop a cooling and demolding device for injection molds to help solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to provide an automatic demolding circulating cooling plastic mold, which can solve at least one of the above-mentioned technical problems. The technical solution of this invention is as follows:

[0005] An automatic demolding circulating cooling plastic mold includes: a first template and a second template; guide pillars are fixedly provided around the first template; guide sleeves are provided around the second template; a pad is fixedly installed on each of the first and second templates; a punch and a die are fixedly fixed on each pad; a first cooling part and a second cooling part are respectively provided in the punch and the die; and a material ejection part and a cooling push part are respectively provided on the first template and the die.

[0006] Furthermore, the first cooling section includes a plurality of placement slots arranged around the right side of the punch, and a cooling pipe is provided in each of the placement slots. The open end of each cooling pipe passes through the adjacent pad and the second template. A U-shaped pipe is connected to the rear side of each cooling pipe, and an inlet and an outlet are respectively connected to the front and rear sides of the U-shaped pipe.

[0007] Furthermore, the second cooling section includes a groove disposed on the die cavity, a first cooling channel is provided in the die cavity and spirally surrounding the groove, a second cooling channel is provided on the right side of the groove within the die cavity, the second cooling channel is continuously S-shaped and disposed on the right side of the second cooling channel, a first water inlet and a first water outlet are respectively provided on the rear side of the die cavity that can communicate with the first cooling channel, and a second water inlet and a second water outlet are respectively provided above the die cavity.

[0008] Furthermore, the ejection section includes multiple recessed platforms extending through the left side of the first template. Multiple ventilation pipes that can connect with adjacent recessed platforms are provided through the pad and the die. Insertion sleeves are movably inserted into each ventilation pipe. Through holes are provided through each insertion sleeve and communicating with its interior. A retaining ring is fixed at the right end of each insertion sleeve. A tension spring is fixedly connected between each retaining ring and the adjacent recessed platform.

[0009] Furthermore, the cooling pusher includes a ejector groove disposed on the punch, an ejector plate movably inserted into the ejector groove, a connecting rod fixed to the left end of the ejector plate, a cooling groove disposed in the ejector plate, and an outlet pipe and an inlet pipe respectively disposed in the connecting rod that can communicate with the cooling groove. The connecting rod passes through an adjacent pad and a second template, and a support frame is fixed to the left end of the connecting rod.

[0010] Furthermore, a third water inlet and a third water outlet are respectively provided on the support frame, which can be connected to the water outlet pipe and the water inlet pipe, and a spring is provided between the support frame and the second template.

[0011] Preferably, a sealing edge is provided around the right side of the punch.

[0012] In summary, the advantages of this utility model over the prior art are:

[0013] This invention provides an automatic demolding circulating cooling plastic mold. During operation, the user installs a first mold plate and a second mold plate on the injection molding machine. The injection molding machine then moves the second mold plate, which moves via a guide sleeve to guide the pin, sealing it onto the die. The injection molding machine then delivers molten plastic between the pin and the die to form the product. The first and second cooling sections then cool the pin and the die respectively, allowing the product to cool and solidify. The injection molding machine then moves the second mold plate, separating the pin and the die. Simultaneously, the ejector section and the cooling ejector section eject the product from the pin and the die. Compared to existing technologies, this invention improves the cooling effect of the mold and prevents irregular deformation of the product. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 2 This is a half-sectional schematic diagram of the present invention.

[0016] Figure 3 This is a partial cross-sectional view of the present invention.

[0017] Figure 4 This is one of the exploded schematic diagrams of this utility model.

[0018] Figure 5 This is the second exploded view of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. First template; 2. Second template; 3. Guide pillar; 4. Guide sleeve; 5. Backing plate; 6. Punch; 7. Die; 100. First cooling section; 200. Second cooling section; 300. Unloading section; 400. Cooling ejector section; 101. Placement groove; 102. Cooling pipe; 103. U-shaped pipe; 104. Water inlet; 105. Water outlet; 201. Shaped groove; 202. First cooling channel; 203. Second cooling channel; 204. First water inlet; 205. 1. First water outlet; 206. Second water inlet; 207. Second water outlet; 301. Settlement platform; 303. Ventilation pipe; 304. Insert sleeve; 305. Through hole; 306. Retaining ring; 307. Tension spring; 401. Unloading groove; 402. Unloading plate; 403. Connecting rod; 404. Cooling tank; 405. Water outlet pipe; 406. Water inlet pipe; 407. Support frame; 4071. Third water inlet; 4072. Third water outlet; 4073. Spring; 61. Sealing edge. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1 to 5 The automatic demolding circulating cooling plastic mold shown is characterized by comprising: a first template 1 and a second template 2; guide pillars 3 are fixedly provided around the first template 1; guide sleeves 4 are provided around the second template 2; pads 5 are fixedly installed on each of the first template 1 and the second template 2; a punch 6 and a die 7 are fixedly fixed on each pad 5; a first cooling part 100 and a second cooling part 200 are respectively provided in the punch 6 and the die 7; and a material ejection part 300 and a cooling push part 400 are respectively provided on the first template 1 and the die 7.

[0022] The above-described automatic demolding circulating cooling plastic mold operates by having the user install the first mold plate 1 and the second mold plate 2 on the injection molding machine. The injection molding machine then moves the second mold plate 2, which moves via the guide sleeve 4 and guide post 3, sealing the punch 6 onto the die 7. The injection molding machine then delivers molten plastic between the punch 6 and the die 7 to form the product. The first cooling section 100 and the second cooling section 200 cool the punch 6 and the die 7 respectively, allowing the product to cool and solidify. The injection molding machine then moves the second mold plate 2, separating the punch 6 and the die 7. Simultaneously, the ejector section 300 and the cooling ejector section 400 eject the product from the punch 6 and the die 7. Compared to existing technologies, this design improves the mold's cooling effect and prevents irregular deformation of the product.

[0023] like Figure 2 and 5 As shown, in some embodiments of this utility model, the first cooling section 100 includes a plurality of placement slots 101 arranged around the right side of the punch 6. A cooling pipe 102 is provided in each of the placement slots 101. The open end of each cooling pipe 102 passes through the adjacent pad 5 and the second template 2. A U-shaped pipe 103 is connected to the rear side of each cooling pipe 102. An inlet 104 and an outlet 105 are respectively connected to the front and rear sides of the U-shaped pipe 103. Coolant is delivered to the inlet 104 through an external conveying device, so that the coolant enters the U-shaped pipe 103. At the same time, the coolant is delivered to the cooling pipes 102 in each placement slot 101 through the U-shaped pipe 103, so that the cooling pipes 102 cool the placement slots 101, and the placement slots 101 cool the punch 6. Finally, the coolant flows back to the conveying device for cooling through the outlet 105.

[0024] like Figures 1 to 3As shown, in some embodiments of this utility model, the second cooling section 200 includes a groove 201 disposed on the die 7, a first cooling channel 202 is provided in the die 7 and spirally surrounding the groove 201, a second cooling channel 203 is provided on the right side of the groove 201 within the die 7, the second cooling channel 203 is continuously S-shaped and disposed on the right side of the second cooling channel 203, a first water inlet 204 and a first water outlet 205 that can communicate with the first cooling channel 202 are respectively provided on the rear side of the die 7, and above the die 7, there are respectively provided... There is a second water inlet 206 and a second water outlet 207. Coolant is delivered to the first water inlet 204 and the second water inlet 206 through an external conveying device. The first water inlet 204 and the second water inlet 206 deliver coolant to the first cooling channel 202 and the second cooling channel 203 respectively. The first cooling channel 202 and the second cooling channel 203 cool the surrounding area and the top of the forming groove 201, so that the product in the forming groove 201 is cooled and formed. Finally, the coolant is delivered back to the conveying equipment through the first water outlet 205 and the second water outlet 207.

[0025] like Figure 3 and 5 As shown, in some embodiments of this utility model, the ejector section 300 includes multiple recessed platforms 301 that penetrate through the left side of the first template 1. Multiple ventilation pipes 303 that can connect with adjacent recessed platforms 301 are provided through the pad 5 and the die 7. Insertion sleeves 304 are movably inserted into each ventilation pipe 303. Through holes 305 are provided through each insertion sleeve 304 and communicating with its interior. A retaining ring 306 is fixed to the right end of each insertion sleeve 304. A tension spring 307 is fixedly connected between each of the retaining rings 306 and the adjacent sinker 301. Gas is supplied to each sinker 301 by an external cylinder. The cylinder can be equipped with a nozzle to supply gas to the sinker 301 and to the ventilation pipe 303. At this time, the gas is supplied to the space inside the plug sleeve 304, causing the plug sleeve 304 to move along the ventilation pipe 303. After the end of the plug sleeve 304 protrudes from the ventilation pipe 303, the gas is discharged from the through hole 305. At this time, the gas pushes the product out.

[0026] like Figure 3 As shown, the cooling pusher 400 includes a ejector groove 401 disposed on the punch, an ejector plate 402 movably inserted into the ejector groove 401, a connecting rod 403 fixed to the left end of the ejector plate 402, a cooling groove 404 disposed in the ejector plate 402, and an outlet pipe 405 and an inlet pipe 406 respectively disposed in the connecting rod 403 that can communicate with the cooling groove 404. The connecting rod 403 passes through the adjacent pad 5 and the second template 2, and a support frame 407 is fixed to the left end of the connecting rod 403.

[0027] The support frame 407 is provided with a third water inlet 4071 and a third water outlet 4072 that can communicate with the water outlet pipe 405 and the water inlet pipe 406 respectively, and a spring 4073 is provided between the support frame 407 and the second template 2.

[0028] When the injection molding machine moves the second template 2, the second template 2 simultaneously moves the support frame 407 to the wall of the injection molding machine, causing the support frame 407 to move the connecting rod 403. When the connecting rod 403 moves, it moves the ejector plate 402 in the ejector groove 401. At this time, the ejector plate 402 pushes the product out of the punch 6. After the second template 2 is reset, the spring 4073 pulls the ejector plate 402 back into the ejector groove 401. At the same time, it is connected to the external conveying device through the third water outlet 4072, so that the coolant is delivered to the water inlet pipe 406 through the third water outlet 4072. At this time, the coolant is delivered to the cooling tank 404, so that the cooling tank 404 cools the ejector plate 402 and prevents the product from sticking to the punch. Finally, the coolant is discharged to the third water outlet 4072 through the water outlet pipe 405.

[0029] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circulating cooling plastic mold with automatic demolding, characterized in that, include: The first template (1) and the second template (2) are provided with guide posts (3) around the first template (1) and guide sleeves (4) around the second template (2). A pad (5) is fixedly installed on each of the first template (1) and the second template (2). A punch (6) and a die (7) are fixed on each pad (5). A first cooling part (100) and a second cooling part (200) are provided in the punch (6) and the die (7). A material ejection part (300) and a cooling push part (400) are provided on the first template (1) and the die (7).

2. The automatically demolding circulating cooling plastic mold according to claim 1, characterized in that... The first cooling section (100) includes a plurality of placement slots (101) arranged around the right side of the punch (6). A cooling pipe (102) is provided in each of the placement slots (101). The open end of each cooling pipe (102) passes through the adjacent pad (5) and the second template (2). A U-shaped pipe (103) is connected to the rear side of each cooling pipe (102). A water inlet (104) and a water outlet (105) are respectively connected to the front and rear sides of the U-shaped pipe (103).

3. The automatically demolding circulating cooling plastic mold according to claim 1, characterized in that... The second cooling section (200) includes a groove (201) provided on the die (7). A first cooling channel (202) is provided in the die (7) and spirally surrounds the groove (201). A second cooling channel (203) is provided on the right side of the groove (201) inside the die (7). The second cooling channel (203) is continuously S-shaped and is provided on the right side of the second cooling channel (203). A first water inlet (204) and a first water outlet (205) that can communicate with the first cooling channel (202) are respectively provided on the rear side of the die (7). A second water inlet (206) and a second water outlet (207) are respectively provided above the die (7).

4. The automatically demolding circulating cooling plastic mold according to claim 1, characterized in that... The ejection section (300) includes multiple recesses (301) that pass through the left side of the first template (1). Multiple ventilation pipes (303) that can connect with adjacent recesses (301) are provided through the pad (5) and the die (7). Insertion sleeves (304) are movably inserted into each ventilation pipe (303). Through holes (305) are provided through each insertion sleeve (304) and communicating with its interior. A retaining ring (306) is fixed at the right end of each insertion sleeve (304). A tension spring (307) is fixedly connected between each retaining ring (306) and the adjacent recess (301).

5. A circulating cooling plastic mold for automatic demolding according to claim 1, characterized in that... The cooling pusher section (400) includes a pusher groove (401) provided on the punch, a pusher plate (402) is movably inserted in the pusher groove (401), a connecting rod (403) is fixed on the left side of the pusher plate (402), a cooling groove (404) is provided in the pusher plate (402), and a water outlet pipe (405) and a water inlet pipe (406) that can communicate with the cooling groove (404) are respectively provided in the connecting rod (403). The connecting rod (403) passes through the adjacent pad (5) and the second template (2), and a support frame (407) is fixed on the left side of the connecting rod (403).

6. The automatically demolding circulating cooling plastic mold according to claim 5, characterized in that... The support frame (407) is provided with a third water inlet (4071) and a third water outlet (4072) that can communicate with the water outlet pipe (405) and the water inlet pipe (406), respectively. A spring (4073) is provided between the support frame (407) and the second template (2).

7. A circulating cooling plastic mold for automatic demolding according to claim 1, characterized in that... A sealing edge (61) is provided around the right side of the punch (6).

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